Sealed and insulating vessel comprising deflection element allowing the flow of gas at corner

Abstract

The invention concerns a sealed and thermally insulating vessel for storing a fluid and comprising a thermally insulating barrier, comprising: a plurality of insulating elements disposed along the walls of the vessel, arranged to allow the flow of fluid, such as a gas, within said thermally insulating barrier; and a corner arrangement, disposed at the intersection between first and second walls (3, 4) of the vessel, the corner arrangement comprising: a deflection element (19) comprising a first face (20a) facing the supporting structure of the second wall (4), a second face (20b) facing the supporting structure of the first wall (3) and a plurality of curved channels (21) extending between the first face (20a) and the second face (20b) of the deflexion element (19) to allow the flow of fluid, such as a gas, through the corner arrangement, the plurality of curved channels (21) comprising at least a series of curved channels spaced apart from each other in the thickness direction of the walls (3, 4) of the vessel.

Description

technical field [0001] The present invention relates to the field of sealed and insulated membrane containers for storing and / or transporting fluids, such as cryogenic fluids. [0002] Sealed and insulated film containers are especially useful for the storage of liquefied natural gas (LNG), which is stored at about -162°C at one atmospheric pressure. These containers can be installed on shore or on floating structures. In the case of a floating structure, the container may be used for transport of liquefied natural gas or for receiving liquefied natural gas as propellant fuel for the floating structure. Background technique [0003] A sealed or insulated container for storing liquefied natural gas comprising multiple side walls, each having a continuous multi-layered structure through the thickness from the outside to the inside, including a load-bearing structure including the double decker of the ship the shell and defines the general shape of the container, a secondary ...

AI Technical Summary

Problems solved by technology

[0005] However, due to the main head loss that occurs within the insulation and the main local head loss especially near the corner areas of the vessel, the insulation in the gas phase is at an ultra-low pressure of about 100 Pa absolute for a relatively short time ,it is hard

[0006] In order to reduce the head loss, due to the increased cross-section of the gas phase flow space, local convection zones are created, which have an adverse effect on the thermal insulation effect and can endanger the structure of the ship due to the local generation of cooling zones on the load-bearing structure, this problem is especially insurmountable

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